205216533 has 24 divisors (see below), whose sum is σ = 299819520. Its totient is φ = 135254880.

The previous prime is 205216507. The next prime is 205216577. The reversal of 205216533 is 335612502.

205216533 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 1 + 653 + 3 = 666.

It is not a de Polignac number, because 205216533 - 2¹⁶ = 205150997 is a prime.

It is a super-2 number, since 2×205216533² = 84227650833080178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205216497 and 205216506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205216133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 428188 + ... + 428666.

It is an arithmetic number, because the mean of its divisors is an integer number (12492480).

Almost surely, 2^205216533 is an apocalyptic number.

It is an amenable number.

205216533 is a deficient number, since it is larger than the sum of its proper divisors (94602987).

205216533 is a wasteful number, since it uses less digits than its factorization.

205216533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 205216533 is about 14325.3807279248. The cubic root of 205216533 is about 589.8443839326.

The spelling of 205216533 in words is "two hundred five million, two hundred sixteen thousand, five hundred thirty-three".